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Journal of Research of the National Institute of Standards and Technology

Date

1989-07

Language

English

Keywords

energy levels; parameters; spectra; tungsten; wavelengths

Abstract

The spectrum of doubly ionized tungsten (W III) was produced in a sliding-spark discharge and recorded photographically on the NIST 10.7-m normal-incidence vacuum spectrograph in the 600-2680 spectral region. The analysis has led to the establishment of 71 levels of the interacting 5d4, 5d3 6s and 5d2 6s2 even configurations and 164 levels of the interacting 5d3 6p and 5d2 6s6p odd ones. A total of 2636 lines have been classified as transitions between the 235 experimentally determined levels. Comparison between the observed levels and those calculated from matrix diagonalizations with least-squares fitted parameters shows an rms deviation of 87 cm-1 for the even configurations and 450 cm-1 for the odd ones.

Publisher

National Institute of Standards and Technology

ISSN

1044-677X

Volume

94

Issue

4

Page

221

Cite

J. Res. Natl. Inst. Stand. Technol. Vol. 94, No. 4, p. 221

Rights

The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. However, please pay special attention to the individual works to make sure there are no copyright restrictions indicated. Individual works may require securing other permissions from the original copyright holder.